Machine for stacking paper cartons



April 13 1926. 1,580,342

E. G. STAUDE MACHINE FOR STACKING PAPER CARTONS Filed Nov. 26 1921 '5Sheets-Sheet 1 INVENTOR EDWINGSTAUDE B6 41 WM H15 ATTORNEYS.

55 Sheets-Sheet 2 E. G. STAUDE INVENTOR to? G DE av Q .l-( 1 S ATTO SFiled Nov. 26

MACHINE FOR STACKING PAPER CARTONS April 13 1926.

NEY

Patented Apr. 13, 1926.

EDWIN G. STAUDE, MINNEAPOLIS, MINNESOTA.

MACHINE FOR STACKING PAPER CARTONS.

Application filed November 26, 1921. Serial 110,518,043.

To all whom it may concern:

Be it known that I, EDWIN G. STAUDE, a citizen of the United States,resident of Minneapolis, county of Hennepin, State of Minnesota, haveinvented certain new an useful Improvements in Machines for StackingPaper Cartons, of which the following is a specification. p

This invention relates particularly to improvements in the delivery endof a machine, similar to that described in my Patent No. 1,104,013,dated July 21, 1914, and particularly to a new and simple device forreceiving the cartons one at a time in a horizontal line andautomatically moving each carton back of the carton ahead, thusdelivering the cartons in a so-called stack.

Several methods for performing this operation of stacking are covered inmy Patent No. 1,018,087, dated February 20, 1912 and Patent No. 961,263,dated June 14, 1910.

The range of work and required service of a machine are continuallyincreasing, making it necessary to adapt it for classes of work whichhitherto have not been handled with entire success.

. I have found that where cartons are stacked in a vertical pile that itis necessary to wait a sufficient length of time for the ink to dry onthe printed surface before the carton can be run through the machine,the weight of the pile bearing against the stacker belts, causing thesurface of the blank to become smeared.

The object of this invention is to collect the articles in substantiallythe same manner, but deliver them in a horizontal direction, so thattheir weight when collected will not rest on the stacker belts, butonsuitable stationary guides.

A further object-is to provide a mechanism for stacking paper cartonswhich will be quickly adjustable within a considerable range,particularly from the very small car tons to the medium sized cartons.

A further object is to provide a mechanism which-will receive thecartons and deliver them in the proper position without excessivepressure at any point during the operation.

A further object is to provide a means for holding the cartons in ahorizontal line' at the delivery end of the device, so that thedelivered stack will present an even and uniform appearance, and thecarton manipd ton or which is tapped ulated by the counter" (not shown)will be quickly recognized.

The invention consists generally in an improved means for receivingthefolded carblank from the feed belts and stacking them in a pile, oneback of the other, in a horizontal direction at right angles to theoriginal direction of travel.

The invention consists" generally in various constructions andcombinations, all as hereinafter described pointed out in the claims.

In the accompanying drawings forming part of this specification, I

Figure 1 is a plan view of the machine to which my improved stackingmechanism has been applied,

Figure 2 is a plan view on an enlarged scale of the delivery end of themachine,

Figure 3'is a longitudinal section showing the stacked cartons in sideelevation,

Figure 4 is a sectional view of Fig. 2' on the line z-z, looking in thedirection of the arrow,

Figure 5 is a section of Fig. 2 on the line 00-00, looking in thedirection of the arrow,

Figure 6 is aesection on the line y-y of Fig. 2, looking in thedirection of the arrow Figure 7 is a view similar to Figure 6,

showing the mechanism for causing uniform delivery, adjusted for anarrow blank.

As shown in the drawing, A represents the machine to which my inventionis applied, and 2 and 3 represent respectively upper and lower creasingrolls. 4 represents the usual stacker belt drum. Around this drum Iprovide an endless belt 5, which passes around asmall pulley' 6, pivotedon a vertical axis at rightangles to the horizontal axis of the stackerbelt drum 4, thus causing the belt to have a quarter twist.

The pivot for the small pulley 6 is preferably secured by a threadedstud 7, screwed into a horizontal bar 8.

On the upper creasing roller 2. I provide a similar endless belt 9,passing around an adjustable pulley 10, pivoted on the stud 11, into thebeveled shoe 12, and secured rigidly by the threaded end of the studbearingagainst the bottom of the beveled groove 13. This constructionpermits the pulley 10 to be adjusted to vary the distance of contact ofthe belt 9 against the stacked cartons, as hereinafter described.

the belt, so that the period during which the belt 9 is in contact withthe stacked cartons will be increased, and further to cause additionalcontact of the belt 9 with the belt 5 at the point where said beltpasses over the roller 6.

The'construction just described will cause the belt 9 to have onlypartial contact with the back of the carton and will leave the cartonsextended at the forward edge at the point 15 in order that thesucceeding carton may slide in the rear of the one ahead.

The roller 14:. is not shown adjustable, but in practice I provide aconstruction similar tothat shown for securing the roller 10, to varythe distance between the roller 10 and the roller 14:. Y I

As these belts have a quarter twist, it follows that if folded cartonsor blanks are fed between them, they must, during the course of theirtravel, change from a horizontal to a vertical position.

In the drawing shown in Figures 2 and 3, I have indicated cartons a, b,0, d and e, in

. the successive positions that each carton assumes in its travel intothe stacker.

The cartons do not always strike the creasing rollers at the same point.That is, their position will vary as much as one fourth of an inchlaterally and if this condition is not corrected as they are given aquarter twist, they will not lieevenly in the stacker.

To insure feeding into the stacker in a uniform plane, I provide a smallroller l6, to ride on the edge of the carton, as shown in Figure 3. Thisroller is pivoted on a sliding member 17, clamped by a capscrew 18 on apost 19that is screwed into the bar 8.

In Figure 6, I have shown the roller 16 on the edge of the carton d,showing that the carton,before it can pass the pulley 16, must travelagainst the bar 8. The pulley 16 is of sufficient diameter so that onnarrow cartons it will pass in between the belts 5 and 9, as shown inFigure 7 and at all times the carton can be controlled before it isdelivered into the stacker. Suitable guides 20 and 21 are clamped on thebar 8 by the capscrew 22, as shown in Figure 5. From the constructionshown, it can be easily seen that by sliding these guides along thebeveled surface of the bar 8, the distance between the guide 20 and theguide 21 can be varied. On longer boxes, where it is necessary that theguide 20 be adjusted some distance away from the pulley 10, I provide aplate'23, secured to the bar 20 by a capscrew 24, as shown in Figure 2.

The hole in the plate 23, through which the capscrew 24 passes, isslotted to vary the distance that the plate may extend into reeasaa thestacker to adapt the guides for cartons of different length.

The bar 8 is also given a quarter twist,

so that each of the belts will rest at all times against the bar andassist in guiding the belt as well as the cartons passing through thetwisted portion of the belts.

Tension rollers may be provided to hold the belts in contact with thecarton, although I find that the action of the twist is such that itcarries the vbelts forward without the use of thcse'rollers. p

The bar 8 is supported by suitable brackets 25 that are clamped to'thelower reach of the ordinary stacker frame 26 on the machine.

From the construction just described, i! is evident that I may clampthis special stacker device to the standard machine, as

.shown in my previous patents, by simply removing the spiral stackersand stacker belts, as described therein. In fact, it is my intention touse both of these devices on the standard machine, but I do not want tolimit myself to such use, as I consider this stacker capable of handlingthe average carton.

-While I have shown the receiving stacker delivering the cartons tothe'left of the machine, I do not limit the invention to this exactconstruction, forImay successfully deliver the cartons to the right byshortening up the belt 9 and lengthening out the belt 5, and obtainreverse positions for. stacking, without changing the direction of twistin the belts. In fact, in practice, the parts are made so that thedelivery in either direction is possible by simplyaltering the length ofthe endless belts 5 and 9.

I claim as my invention:

1. In a machine of the class described, a stacking receptacleincombination with means arranged to receive folded article, and deliverthem to said receptacle on one edge in the direction of movement of saiddelivering means at an angle to their initial movement in saiddelivering means.

-2. In a stacking machine, means for transporting articles to be stackedcomprising oppositely disposed conveying elements cooperating to receivethe articles in one plane and during transportation changing thearticles to another plane, and a stacking receptacle positioned to oneside of the transporting means and having an open side towards saidmeans, said transporting means acting to deliver the articlestransported side-wise into said receptacle one against the other instacked relation.

gles substantially to their initial movement.

4. In a machine of the class described, a stacking receptacle incombination with a feeding means arranged to move across the open end ofsaid receptacle to impart a quarter turn to folded articles beforedelivery to said receptacle.

5. la a machine of the class described, a stacking receptacle having aside opening leading thereto in combination with'means for deliveringfolded articles on edge to said opening said delivering meansextendingacross the entrance to said receptacle and having. means foradjustment with respect to said entrance.

6. In a machine of the class described, a stacking receptacle having aside receiving opening in combination with means for imparting a partialturning movement to the articles fed and deliver them to said receptaclethrough said opening the articles in said receptacle being parallelsubstantially with the direction of movement of said delivering means.

7. In a machine of the class described, a stacking receptacle incombination with means for feeding cartons initially in one direction,said means being adapted to impart a partial rotation'to said cartonsand deliver them gles substantially to said receptacle at right antotheir initial, movement .belt to impart a quarter from said stackerbelts,

said delivering means extending across the front of said receptacle fordelivering the cartons vertically on edge therein parallel substantiallywith the direction. of movement of said delivering means.

8. In a machine of the class described, a horizontally arranged stackingreceptacle, :1 stackerbelt having a quarter twist, a second beltcooperating with said first-named turn to the articles delivered betweenthem, said second belt having an adjustable pulley in front of andadjacent. said receptacle, the adjustment of said pulley permitting thedistance of contact of said second belt with the stacked articles to bevaried.

9. In a machine of the class described, the combination with endlessstacker belts adapted to receive and impart a quarter turn to thearticles fed between them, a horizontal receptacle arranged to receivethe articles on edge one in front of the other one stacker beltextending in front of said receptacle parallel substantially with thearticles therein, and said-receptacle being adapted for adjustment oneither side of said stacker belts for right or left hand ,delivery ofthe articles thereto.

Inwitness whereof, I my hand this 15th day of November 1921.

EDWIN G. STAUDE.

have hereunto set

